Cost
Experienced craftsmen in a controlled manufacturing environment offer much higher productivity and efficiency in comparison to traditional construction labor.
Vertical processes are assembled horizontally, so personnel are working at grade rather than assembling and disassembling scaffolding, climbing up and down stairs and caged ladders - which is a waste of time.
Field rates are higher than shop rates. No travel expenses or per-diems are incurred by field laborers or project managers when production occurs in the shop.
Due to the shortened project schedule, your product gets to market earlier which starts making you money sooner. How much this is worth depends on the value of your product. This added revenue should also be figured into your total savings of a modular project.
